Valve.



H. H. MOORE. M. L PUSHCAR & W. BROWN.

APPLICATION FILED M A Y 2 5 I I 9 I 7.

Patented Sept. 10, 1918.

HENRY I-I. MOORE, MICHAEL J. rUsIIoAR, AND WILLIAM BROWN, OE DOVER, NEW JERSEY,

VALVE.

Specification of Letters Patent.

Patented Sept. 10, 1918.

Application filed May 25, 1917. Serial No. 170,945.

To all whom it may concern:

Be it known that We, HENRY H. MOORE, MICHAEL J. PUsHoAR, and WILLIAM BROWN, citizens of the United States, residing at Dover, in the county of Morris and State of New Jersey, have invented certain new and useful Improvements in Valves; and we do hereby declare the following to be a full, clear, and exact description of the invention,

such as will enable Others skilled in the art to which it appertains to make and use the same.

This invention relates to valves, and more particularly to pump valves.

It is one of the Objects of the present invention to provide in a valve means for guiding and limiting the lift of the valve disk from its seat, and also to provide a valve device for use in pumps having spaced Walls upon one of which is adapted to be arranged a valve seat and upon the other of which is adapted to be arranged a plug which when removed from the Wall will permit the removal of thevalve seat from the lower wall.

Another object of the present invention is to provide for the ready and simple adjustment of means for controlling the lift of the valve disk from its seat; also to provide for the efficient packing of the plug and the means for controlling the lift to eliminate leakage.

With these and other objects in view as will be rendered manifest in the following specification, the invention consists of a detachable plug carrying an adjustable stop adapted to be arranged in suitable position with relation to the movable disk of the valve so that the movement of the disk is controlled in alinement with its seat.

There is illustrated in the accompanying drawing one embodiment of the invention, in which drawing:

Figure 1 is a central longitudinal section through the device, and

Fig. 2 is a plan view of the valve disk.

The present valve device is particularly designed for use in pumps in which there is usually provided a valve chest having a seat wall indicated for instance at 2, and above this is an outer wall of a pump chest as shown at 3. The wall 2 is herein illustrated &

preferably of such diameter as to be freely insertible in the aperture 4 of the seat wall 2 by insertion through and removal from anaperture 3 in the adjacent valve chest wall 3. The passageway or aperture of the valve seat 5 is adapted to be closed in operation by a suitable form of valve disk indicated at 6 and which may have downwardly extending lugs or flanges slidably fitting the aperture of the valve seat 6.

The present invention relates particularly to means for controlling, guiding and adjustably varying the lift of the valve disk 6 from its seat during the operation of the pump, and to accomplish this guide and control the invention contemplates the provision of a suitable stop which is adjustably mounted, for instance, in the adjacent valve chest Wall 3 so that one end of the stop may be suitably arranged with relation to the valve disk 6 so as to limit the lift of this disk from its seat. In the embodiment of the invention herein illustrated the stop is shown as comprising a rod having a threaded shank portion 7 and a cylindrical and slightly enlarged portion 8, and may have its lower end portion 9 below the body 8 turned down if desired, though this is not essential. The threaded portion of the shank 7 of the rod is adjustably engaged with complementary threads of a removable plug 10 having exterior threads 11 to engage the threaded aperture 3 of the valve chest wall 3. The plug 10 is of suitable length, and its threads, which receive the threaded shank 7 extend to its upper end and permit the shank to project thereabove so that access may be had to the end of the shank and the latter adjusted longitudinally in the plug 10 so as to determine and vary the relative position of the inner end 9 of the stop with relation to the valve disk 6.

After the stop rod has been adjusted in its desired position with relation to the valve disk 6 it may be locked in such position by any suitable means, such for instance as a lock nut 12, which is applied to the upwardly projecting threaded portion of the stop rod.

One of the features of'the present invention resides in providing means to reduce or eliminate the tendency of the fluid under pressure in the pump from leaking past the threaded joint between the plug 10 and its wall 3, and also to eliminate leakage past the threaded portion of the adjustable rod stem 7 and to accomplish this the lower end of thegpluglo-is shown as circumferentially grooved as at 10 to receivea packing 13- of suitable nature which may be arranged in the groove 10 and is adapted to bear against ture .3. .To increase the packing efiiciency of the packing ring 13 preferably means are provided to utilize the pressure in the valve chest to force the packing ring-13 outwardly in snug frictional'engagement withthe adjacent cylindrical surface of the aperture 3, and for this purpose the lower end of the plug 10 is-shown as provided with apertures 10 which lead into the bottom of the groove. 10 so that fluid under pressure may be applied to the inner surface of the packing ring 13 and the latter pressed outwardly against the adjacent surface of the wall. .In a simi lar mannerpacking is secured between the plug 10 and the central and cylindrical body portion 8 of the stop rod by the provision of an internal packing ring 14 arranged in a groove therefori in the bore of'the pluglO. If desired pressure of theifluid in the pump may be conducted into the groove in'which the ring 14: is placed so that the pressure may act on the packingring 14 to. force it into snug bearing onthe cylindrical body 8 of the stop rod, apertures le beingprovided for this purpose and opening through the lower endiof the plug- 10. i

F or thepurpose of preventing the Wabbling'and to secure-a true movement of the valve disk 6 to and from its seat 5 preferably the valve disk is; provided with a central cylindrical or other suitable chamberv 6 of suitabledepth into which thelowerandreduced end 9 of the stop is adapted to beinserted, and along which the valve 6 slides to and fro as it lifts and seatsduring the operation of the pump,land for the purpose of preventing anyiback pressure around the lower end 9 ofthe stop device suitable vents are provided to permit the outflow of fluid fromthe bottom of the chamber 6 as the valve moves upwardly, such vents being indicated as inclined apertures G deading from the bottom of the chamber. 6 [upwardly and Copies of this patent may be obtained for :fluid beneath the stop end --9;-the top oft-he valve disk 6 may also be provided with channels or recesses 6 to permit the outflow of liquid from past the stop end. the cylindrical adjacent portion of the aper- -From the foregoing it will be seen that we hav'e provided a simple means-for controlling the lift and movement of the valve disk, and an advantage of which is that by limiting the upward movement of the valve disk 6 from its seat unnecessary movement of the disk is eliminated, and also the pounding of the valve'di'sk upon its seat avoided, and by providing for the, true guiding and 'alinement of the valve" as to its seat, the wear of thevalve disk and its seat ism'aiiitaine'd uniform'and even due to' the causing oft-he valve to move in true.positiontowaljdjand from its seat during its vibration WVhat is claimed as new" is: I

1. In a pump valve, a movable disk, an adjustable stop, engageable with the disk to limit its movement and having athreaded shank, and an enlargedf cylindrical intermediate body, and a plug in which, the stop is threaded and:from which. it is"v accessible at the outer end, said plugattachableto a pump wall adjacent the disk, and provided with an enlarged bore belowv the threadsto receive the stop body and having packingjto eliminate leak thereabout and around the stop-body. 2. In a pump valve, a. movableidisk, an adjustable stop engageable with the disk to limit its movement, and having a threaded shank, and a large cylindrical b0dy', fa:ud a plug in which thestop is {threaded and from which it is accessible at'the outer end, said plug attachable to pump wall adjacent the seat, and provided wi'tlraiienlarg'ed.bore be low the threads to receive the stop body ,said disk having an axial, vented bore inthe b'ody thereof in which the stop .end isfslidable;

' In testimony whereof we affix" our signatures. v

HENRY H.' MOORE.

MICHAEL JJPUSHCA'R .WILLIAMBBQWN- five cents each, by addressing the f Commissioner of l a tents,

D..ic., LL ,1. V-..- c E l 

